Laminated ceramic capacitor

Abstract

Internal electrodes A1 to D1 and A2 to D2 are laid in layers at spaces in the direction of thickness of a ceramic body 1. Lead electrodes a1 to d1 and a2 to d2 are led out to a side face to form lead portions. Dummy electrodes 51 to 58 have one-side ends led out to a side face to form lead portions in layers provided with the internal electrodes A1 to D1 and A2 to D2. The lead portion of a lead electrode a1 to d1 or a2 to d2 of each layer is superposed over the lead portion of a dummy electrode 51 to 58 belonging to another layer in the direction of thickness.

Description

TECHNICAL FIELD[0001]The present invention relates to a laminated ceramic capacitor.BACKGROUND OF THE INVENTION[0002]As a laminated ceramic capacitor, there is known a laminated ceramic capacitor having a plurality of terminal pairs, for example. A ceramic capacitor having a plurality of terminal pairs is used for decoupling a central processing unit (CPU) of a personal computer, and the like. For example, Patent Literature 1 (Japanese published patent application No. 2002-184647) has disclosed an internal electrode pattern of a laminated ceramic capacitor having eight terminals and a method for manufacturing the same.[0003]And Patent Literature 2 (Japanese published patent application No. 2003-31435) has disclosed a laminated ceramic capacitor having eight terminals, being provided with a filling layer (dummy electrode) in a part having no lead electrode provided in it in order to prevent a ceramic dielectric layer from being depressed.[0004]While a conventional laminated ceramic c...

AI Technical Summary

Benefits of technology

[0007]An object of the present invention is to provide a laminated ceramic capacitor being capable of reducing defective connections between internal electrodes and terminal electrodes.

[0008]Another object of the present invention is to provide a laminated ceramic capacitor being capable of reducing occurrence of delamination.

[0009]Yet another object of the present invention is to provide a laminated ceramic capacitor being capable of reducing occurrence of cracks.

Problems solved by technology

Therefore, a laminated ceramic capacitor having a plurality of terminal pairs has had a problem that defective connections occur frequently between internal and terminal electrodes and the yield rate of it is worsened due to a smaller number of internal electrodes exposed at a side of a ceramic body in comparison with a conventional laminated ceramic capacitor.

Further, with the miniaturization of a laminated ceramic capacitor, since a part to be exposed at a side of a ceramic body and connected to a terminal electrode is made smaller, a conventional laminated ceramic capacitor also has had a problem that defective connection to a terminal electrode occurs frequently.

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